ResMed products are for sale only to patients within the U.S. and not to other third parties or businesses.

All services provided by CPAP.com, including advertisement, ordering, sale, delivery, instruction, and setup of the products are performed solely by CPAP.com and independently of the manufacturer.

Important Tips

The H5i Water Chamber holds 380 ml of water.

The plate in the Standard Water Chamber for H5i™ Heated Humidifier is made of aluminum.

Maximum Fill Level Tips

Do not fill the water tank above the maximum fill line. Damage to the humidifier or therapy device may occur. If the water tank is overfilled, water may leak out of the tank inlet (located on the front corner of the tank) when installing the tank lid.

Use only room temperature distilled water in the tank. Do not put any chemicals or additives into the water. Possible airway irritation or damage to the water tank may result.

Remove the tank, empty all water, and replace the empty tank before transporting the humidifier base.

Do not attempt to fill the water tank while it is inside the humidifier.

To avoid spilling, do not disconnect the humidifier from the therapy device with water in the tank. Remove the water tank from the humidifier before disconnecting the therapy device.

Do not turn the humidifier on without the water tank installed. The Humidifier number setting must remain on 0 if there is no water in the water tank.

The humidifier door must be set in the open position before removing the water tank. Do not remove the water tank without making sure that the humidifier door locks into the open position.

Do not move the humidifier while the water tank has water in it.

Manufacturer Warranty

This product comes with a 90 Day Manufacturer Warranty. CPAP.com will work with the manufacturer on your behalf if the product needs repairs. Please follow these steps:

Contact us at cpap@cpap.com or 1-800-356-5221 to receive an RMA (Return Merchandise Authorization) Number before returning the equipment

Include a note with the product describing the issue you are experiencing, along with your full contact information to include a return shipping address and the RMA number provided to you

CPAP Product Customer Reviews

Voted most helpful favorable review

Not very sturdy

Lewis R, VA – August 24, 2013

"I must replace these frequently as overall ResMed seems to be making shoddier products. CPAP.com is a good company. However, costs make me look for sales and free shipping of these ResMed products."

5 people found this review helpful.Was this review helpful for you?

Voted most helpful critical review

Performs as described

Michael G, PA – December 29, 2014

"The basic water tank for the H5 humidifier is more than sufficient for daily use. Not really sure what separates this from the more expensive version except the dishwasher compatibility of the other. I've had both versions and hand washing is just fine."

E C, TN – January 09, 2015

"Excellent product. Thank you."

Was this review helpful for you?

Performs as described

Michael G, PA – December 29, 2014

"The basic water tank for the H5 humidifier is more than sufficient for daily use. Not really sure what separates this from the more expensive version except the dishwasher compatibility of the other. I've had both versions and hand washing is just fine."